9 Best Air Purifiers in India, Delhi (2021) – Buyer’s Guide & Reviews



With the rise of Air Pollution in India, You simply can’t neglect the need for breathing Clean and Pure Air. In this post, I am going to List Down the Best Air Purifiers in India.

Air Quality In India is degrading at an Alarming Rate. “Previously, China used to be the Most Polluted regarding Air Quality. But now, It’s India“.

When you speak of air pollution, the first things that come to mind are industrial, vehicular, and other kinds of outdoor pollution.

In a way, it is right. But, have you ever wondered how polluted is the indoor air that you breathe in your house?

Naturally, you will frown when I ask you this question. Normally, we expect the indoor air to be pure. You will be surprised to know that the indoor air can be worse than the outdoor air as far as pollution is concerned.

There are many air purifiers available on the market. Dyson and Phillips are the market leaders in this sector. Let us review some of the best air purifiers in India.

Best Air Purifier in India

1. Dyson Pure Cool Link Tower Wi-Fi Enabled Air Purifier, TP03

If you wish to eliminate pollutants as small as PM 0.1, the best bet for you is Dyson Pure Cool Link Tower Wi-Fi enables air purifier. This air purifier uses Air Multiplier technology to project and circulate purified air throughout the room.

A crucial aspect of air purification is in the face velocity through which the air is forced into the filters. Most of the air purifiers in the market have a high face velocity that can result in ultrafine pollutants as small as PM 0.1 circulating back into the room.

Dyson air purifiers have a low face velocity along with a high-efficiency HEPA filter. This filtering technology ensures that the harmful pollutants remain trapped in the screen and do not find their way back into the room.

Monitoring the Dyson air purifier is easy because of the availability of the Dyson Link App. This app enables you to see the live air quality metrics and monitor the quality of air circulating inside the room.

The positive aspect of this Dyson Air purifier is the presence of 3600 Vacuum-sealed Glass HEPA filter with Tris-coated Activated Carbon to trap the smallest of contaminants. 

The H-13 HEPA filter is pleated over 200 times and comes densely packed with borosilicate microfibres. The Air Multiplier technology ensures powerful air projection whereas the Oscillation features help to circulate the purified air throughout the room quickly.

This high-quality air purifier is certified by the Asthma and Allergy Foundation of America, thereby ensuring it is safe for use by asthma patients.

2. Coway Sleek Pro AP-1009 Air Purifier

Coway is a globally renowned brand of air purifiers. This Korean product is one of the best air purifiers available in India under Rs 15,000. This appliance comes with some of the best features one can expect an air purifier to have.

The Coway Air Purifier features a sleek design that not only performs admirably but also looks pleasing to the eye. This appliance uses HEPA purification to deliver high-quality pure air to your household.

The air purifier is ideal for rooms measuring around 350 square feet, thereby making it suitable for use in our living rooms and bedrooms alike. The CADR of 303 m3/hr ensures ample delivery of pure air to all the corners of the room.

This air purifier works on a 3-stage filtration process comprising of,

  • Pre-filter that removes the large dust and heavy pollutants
  • The patented Urethane Carbon filter that eliminates bad odour and harmful gases
  • The multi-layer HEPA filter to eliminate PM 2.5 particles

Thus, you get clean and pure air to breathe at all times.

Another highlight of this air purifier is the user-friendly control options. These options include indicators for airspeed and filter replacements. The one-touch airspeed control and the mood lamp on/off setting are incredibly useful control options.

This air purifier works on a unique dust sensing technology to control the airflow system.

3. Philips High-Efficiency Air Purifier with Vitashield Intelligent Purification

This Philips air purifier is an excellent product that removes 99.97% of airborne particles, hence proving ideal for your children’s bedrooms. The Philips air purifier comes with exciting features like NightSense Auto Mode.

This advanced technology helps to monitor the quality of air you breathe while you sleep. Secondly, it also ensures to make the minimum of noise so that your family sleeps better.

The VitaShield IPS design, along with the NanoProtect filter enables boosted clear air delivery rate of 270m3/hr. This air purifier eliminates ultra-fine particles as small as 0.02µm. It can also keep harmful gases like TVOC and formaldehyde at bay.

The extra thick NanoProtect HEPA ensures higher efficiency and lifetime protection against airborne contaminants. The Philips Air purifier features an Auto Purification mode to detect and remove PM 2.5 level pollutants.

Another advantage of the Night Sensing Mode is the dimmed or switched off the light to help you sleep comfortably.

An excellent feature of this air purifier is that it lets you know the time to replace the filter. The Healthy Air Protect Alert is a useful feature to help extend the life of the air purifier. This purifier comes with safety features like child lock.

It is possible to check and provide real-time air quality feedback using the 4-step colour code ranging from blue (good allergen and particle level) to red (unsafe levels). The Philips air purifier is certified by ECARF and Airmid.

4. Mi Air Purifier 3 with True-HEPA Filter

Mi Air Purifier comes with innovative features like an ultra-clear OLED display with touch control. This air purifier ticks all the boxes with regards to quality, like detection of clean air, energy efficiency, noise levels, etc.

This air purifier is in touch with your needs as the OLED Touch Display offers essential info like air quality indicators. On the performance aspect, this appliance is excellent as it provides a thorough filtration process comprising of a 3-layer composite filtration with True HEPA filter.

The Clean Air Delivery Rate (CADR) of 380m3/hr makes it one of the best air purifiers in India because of its unmatched cleaning power. The 360-degree filtration with True HEPA filters eliminates up to 99.97% of contaminants with the particle size of up to 0.3µm.

The innovative design of this air purifier ensures a consistent airflow of up to 6333 litres of clean air per minute. The highlight of this air purifier is its energy-efficient performance. Besides, this appliance performs its job silently and does not add to the noise pollution.

Controlling this air purifier is child’s play as it is compatible with a unique mobile phone app. Besides, this air purifier also works comfortably with Alexa and Google Assistant.

The laser particle sensor ensures not to leave a speck of dust in the air it filters for you to breathe. This air purifier is perfectly suited for large rooms, as it can cover up to 484 square feet area.

5. Mi Air Purifier 2C

The most significant advantage of this Mi 2C air purifier is that it is easy to install and use the appliance. Changing the filters is also easy. The DIY Filter Change feature is a unique one.

Besides being easy to use, the air purifier is an efficient one, as well. This appliance comes with a True HEPA Filter capable of filtration efficiency of 99.97% for particle sizes up to 0.3 microns.

This Mi 2C air purifier comes with a 3600-air intake feature to ensure efficient filtration and distribution of pure air throughout the room. This air purifier offers a CADR of 350 m3/hr, thereby guaranteeing a coverage area of nearly 452 square feet. Therefore, this air purifier is ideal for living rooms as well as bedrooms.

The Real-Time Air Quality Indicator is a useful feature, as it monitors the air quality and displays the purification levels on a real-time basis. One of the highlights of this appliance is the one-button control feature for smooth operation.

This air purifier works on an Auto Mode, thereby reducing the need for manual intervention. Similar to the Mi S air purifier, the Mi C model is highly efficient, as it eliminates all kinds of bad odours, bacteria, and significant air-borne pollutants.

This air purifier is an energy-efficient appliance. The device consumes only 29 watts of power. The appliance comes with a one-year warranty on all parts except the filters.

6. Dyson Pure Cool Air Purifier Model DP04

Dyson manufactures some of the best air purifiers that ensure high-quality air purification. This Dyson model DP04 senses and displays pollutants in real-time. This purifier can detect all type of contaminants such as PM 2.5, PM 10, VOC, and NO2.

The Air Quality Indicator is updated every 12 seconds, thereby ensuring purification of the best quality. You also have the facility of a 24-hour AQI graph on the screen.

The air purifier features 3600 Vacuum Sealed glass HEPA and activated carbon filters to take care of all kinds of contaminants. The HEPA filter can trap 99.95% of microscopic allergens and pollutants as small as 0.1 microns.

The Air Multiplier technology is capable of delivering over 290 litres per second of pure airflow, thereby ensuring to circulate pure air in the entire room. It is possible to change the oscillation angles up to 450, 900, and 3500 to make sure that every part of the room receives pure air. Monitoring the performance of the air purifier is convenient using the Dyson Link App.

The Night mode purifying feature ensures noiseless operation, thereby enabling undisturbed sleep.

Another positive aspect is the draught-free diffused mode that purifies the air through side vents without the powerful projection. This air purifier is like a powerful bladeless fan capable of cooling the room in the hot summers.

Changing the filters is easy. The built-in notification feature alerts you on the LCD screen as well as the app when it is time to change the filters.

As this air purifier comes with advanced technology such as Wi-Fi and Bluetooth enabled, this air purifier is a dream appliance to have in your home.

7. Philips High-Efficiency Air Purifier with VitaShield Intelligent Purification – 3000 Series

Philips is a reputed name in the market that delivers some of the best air purifiers in the world. The 3000 Series Air Purifier comes with excellent features like VitaShield and AeraSense to ensure that your family gets the purest air to breathe.

The VitaShield technology ensures to eliminate ultra-fine particles as minute as 0.02µm and 99.97% of common airborne allergens. The AeraSense technology enables you to get an assurance about the quality of indoor air on a real-time basis.

This air purifier features a thick NanoProtect HEPA filter designed for superior purification efficiency against airborne particles. The Allergen Mode is effective in removing common airborne allergens.

This purifier comes with VitaShield IPS with aerodynamic design that boost clean air delivery up to 393 m3/hr. Therefore, this air purifier is ideal for room size up to 95 square metres. This purifier removes particles as small as 0.02µm. The activated carbon filter gives you protection from harmful gases. Formaldehyde and TVOC.

The 4-step colour ring is an excellent feature that provides real-time feedback on indoor air quality. The Sensor touch UI with a big numerical display is a user-friendly one.

The AeraSense technology senses the smallest changes in air conditions and automatically monitors the fan speed to ensure high efficiency. The Sleep Mode feature makes it a silent performer by minimising the sound and increasing the comfortability by turning down the fan speeds.

This air purifier is quality-tested and certified as Allergen-free by AHAM, Airmid, and ECARF.

8. Philips 2000 Series AeraSense AC2887/20

The Philips 2000 Series air purifiers come with similar technology as the 3000 series. These air purifiers are engineered with three pre-settings that you can choose from. It includes General, Virus, and Bacteria modes. Activating the relevant mode ensures high-quality pure air for your family.

Philips AC2887/20 filter lifetime is calculated accurately considering the indoor pollution, airflow, and operating time. The Healthy Air Protect feature alerts you about the change in the filters at the appropriate time.

One of the highlighting aspects of this air purifier is the low noise it makes, thereby ensuring undisturbed sleep for the family. It is also convenient to dim the lights or turn it off on the UI to provide higher comfort.

The VitaShield IPS technology boosts air delivery rate up to 344 m3/hr, thereby ensuring to eliminate the ultrafine particles as small as 20nm. It also reduces the spread of harmful gases like formaldehyde and VOC. By removing 99.9% of bacteria, this air purifier proves its efficiency as one of the best in the business.

Air sensors can detect the minutest of air pollutants, but bacteria and virus escape these sensors, as well. This air purifier has a Bacteria and Virus mode that boosts airflow and increase the air exchange per hour, thereby eliminating 99.9% of bacteria. 

The AeraSense technology identified particles as small as PM 2.5 and arrests them, thereby making sure that the air you breathe is free of allergens. This air purifier comes with this specific algorithm AeraSense that can detect daily events like shaking of the pillow or the passing of a vacuum cleaner. It increases the air delivery speed to reduce the allergens to the minimum.

9. Sharp Air Purifier for Homes and Offices FP-F40E-W

Sharp air purifiers come with the best of Japanese technology. Plasma Cluster technology allows for clean indoor air, whereby families all over India trust Sharp to ensure the good health of their children.

Plasma Cluster technology releases positive and negative ions into the air that act on airborne microbes, mould, and viruses. They instantly break down these microorganisms by removing hydrogen. The broken-down components combine with hydrogen to form water, thereby returning to the air.

Plasma Cluster technology is one of the most efficient technologies available for air purification, as it suppresses 99% of bacteria and deactivates 99.9% of viruses. It reduces around 99.9% of moulds and removes 99.8% of allergens.

The 20-degree airflow helps in purifying air from the root to the floor. The design is such that it collects the dust from the lower levels of the room and decreases the static electricity in the room, thereby resulting in better cleaning.

This air purifier features an innovative Haze Mode that is specially made to use when the pollution levels are high. This mode releases high-density plasma cluster ions that combine with the different fan speeds to remove all impurities quickly.

This purifier comes equipped with a dust and odour sensor to sense the contaminants in the room. The LED indicator glows red when the pollution levels are high, whereas the yellow light indicates medium pollution.

One of the best aspects of this air purifier is that it makes as little noise as possible. This appliance has three different modes, high, medium, and low. You can set the best mode, depending on the room size.

This air purifier comes with excellent filters capable of capturing 99.97% of airborne impurities, like PM2.5 particles, cigarette smoke, allergens, cooking odours, and pet dander.

Air Purifier Buying Guide

Here are some staggering statistics that can startle you out of your slumber.

  • Of the top 10 most polluted cities in the world, six are in India.
  • Amongst the capitals, New Delhi ranks at the top.
  • Air pollution kills approximately 1.25 million people in India annually, much more than the damage caused by COVID-19.

These figures are courtesy the latest “World Air Quality Report” submitted by IQAir.

If these statistics sound alarming, what would be your reaction if we say that the indoor air we breathe is much worse than the air outside our homes?

Does it sound surprising? Yes, but unfortunately, it is true.

The US-EPA (Environmental Protection Agency) has certified that indoor air is nearly five times more polluted than the air outside.

If this is true of the US, it applies all the more to Indian conditions, especially with Indian cities having a conspicuous presence in the notorious list of the top 10 polluted cities in the world.

What is the solution? It would be your follow-up question.

The solution is to invest in a high-quality air purifier for your home. This extensive buying guide will explain everything about air purifiers and why it is advisable to have one in your home.

We shall also discuss the points to note when purchasing an air purifier for domestic use.

Before we proceed ahead, let us answer a few basic questions to prepare the groundwork.

What is an air purifier?

In layman terms, an air purifier is an appliance that purifies the air around you, whereby you get pure air to breathe.

Air purifiers use a variety of filters to trap the microscopic dust particles and pollutants that can cause harm. We shall discuss these aspects later on when we come to it. The following examples will drive home the fact.

  1. People who use air conditioners are home would have noticed the amount of dust that collects on the filters. Cleaning these filters improves the cooling capacity of the AC.
  2. Similarly, you would have noticed the amount of dust sticking to the ceiling fans.

From where does this dust come?

It does not come from anywhere. The dust particles are already present in the air that we breathe.

Now, you can imagine the significance of our lungs that act as air purifiers for our body. If you have an asthma patient at home, you will understand the trouble he/she might find when breathing in such polluted air.

The key takeaway can be summed up in a single line. 

The cleaner the air you breathe, the better is your health.

Let us now look at the types of pollutants present in the air that your air purifier can remove

Generally, every house contains the following common types of pollutants.

  1. Dust and dust mites
  2. Cooking odours, chemical cleaners, and toxins from the aerosol sprays that we use, like insect repellents, pain killers, and others
  3. Agarbatti smoke and carbon residues left behind by burning camphor
  4. Volatile organic compounds  found in paints, varnishes, carpets, mattresses, and building materials
  5. Bacteria and viruses
  6. Pollen, plant spores, and fungi
  7. Mould spores
  8. Pet dander and hair
  9. Tobacco smoke, especially if you smoke cigarettes.

A glance through the above list shows that each of these pollutants can damage your health, whether you have an allergy or not.

When do you need an air purifier at home?

We have seen why you need an air purifier at home. Let us now see when you need it the most. Though an air purifier is welcome at any time, the following circumstances require you to go for one immediately.

Dust allergies

If you experience frequent bouts of sneezing or coughing because of dust allergies, it is time you invested in an air purifier for allergies. These purifiers eliminate allergens like pollen and pet dander and provide you with much-needed relief.

Asthma attacks

Houses having asthma patients should not think twice before purchasing an air purifier. It is one of the perfect ways to provide relief to people living with asthma and ensure that they do not experience respiratory issues.

Pet Dander and hair pollutants

Having pets at home is fun. However, the downsides are that you are exposed to pet dander and hair impurities that you inhale unconsciously. Having a specific air purifier to deal with pet dander should be ideal for such homes.


No Indian home is bereft of smoke. You should thank your stars if there are no smokers in your home.

However, every house has to contend with smoke emanating from the kitchen while cooking and also from devotional rooms when you light incense sticks and burn camphor. A high-quality air purifier can eliminate the chemicals from such smoke and make it comfortable.

Chemical sensitives

Using mosquito repellents is excellent for dealing with mosquitoes. Similarly, you use aerosol sprays for repelling flies and cockroaches. Even your medicinal sprays for providing relief from muscular aches can pollute the air.

Different Types of Air Purifiers

Purchasing an air purifier can be confusing, at times. An Indian home usually experiences all the conditions discussed above. That does not entail you should go for five different air purifiers. You get air purifiers that can cater to all the above requirements.

Though you find an overwhelming range of air purifiers on display on the internet, it finally boils down to the type of filtration methods in use.

There are four types of air filtration technology available in India. They cater to almost all the pollutants described in one of our earlier paragraphs.

HEPA (High-Efficiency Particulate Air) Filters

When it comes to air filtration, nothing can beat HEPA filtration technology. The driving mechanism behind the functioning of HEPA filters consists of a dense paper filter for trapping airborne contaminants.

It can eliminate various air contaminants like pollen, fungi, mould spores, dust, hair, pet dander, and visible smoke.

When shopping for air purifiers using HEPA filters, you have to be careful. Manufacturers tend to confuse people by using similar terms. You should look out for the words, “True HEPA Filter” as it can eliminate up to 99.97% of contaminant particles as small as 0.3 microns.

The other names you could encounter are “HEPA Type” or “HEPA like.” These filters are not genuine HEPA filters and can eliminate particles only as small as 2.5 microns. On the efficiency front, these air purifiers are 600% less efficient than cleaners using “True HEPA filter.”

Working of HEPA Filter


  • The advantage of HEPA filtration is that they eliminate pollutants and do not release them back into the air. Thus, they are safe for almost all kinds of respiratory problems.


  • The significant disadvantage is that these filters are expensive and incur high maintenance costs. Besides, they are not the ideal filters for eliminating chemical odours. The air purifiers using HEPA filters use a fan to suck air. Hence, they can be noisy at high speeds.

Ionic Filtration

Ionic filtration is a unique filtration technology that operates by emitting charged ions into the air that attaches itself to the airborne contaminants. Thus, these contaminants become heavy and fall onto the floor and other surfaces.

Generally, these ionic air purifiers come equipped with an electrostatic collection plate for attracting and collecting these particles. This purification technology can eliminate particles as small as 0.01 microns in size.

Ionic filtration can remove contaminants like pollen, dust, mould spores, VOCs, fungi, visible smoke, and even some bacteria and viruses.


  • The primary advantage of ionic filtration is that these filters are comparatively cheaper than HEPA filters. They do not require much maintenance and filter replacements. As this technology does not use fans, it does not make any noise.


  • The downside of ionic filtration is that the pollutants remain in the room on the floor and other surfaces. If the air purifier features an electrostatic plate for collecting these contaminants, one should ensure to clean these plates with soap and water frequently. Besides, this technology produces traces of ozone that can cause respiratory issues in asthma patients.

Carbon Filtration

Activated carbon has excellent filtration properties. You would have seen the use of activated carbon filters in water purifiers and even refrigerators for eliminating foul food odours. Activated carbon contains millions of absorbent pores that can trap fumes, chemical gases, and odours.


These filters do not remove particles that cause health issues but eliminate bad smells. It can deal with chemical and gas fumes, and foul odours from cleaning supplies, smoke, pesticides, paints, cooking, and even pets.


  • The activated carbon filtration technology is comparatively cheap, easy to replace, and keeps the room smelling fresh all the time.


  • The demerit of this technology is that it is useful for reducing gaseous fumes, odours, and foul smells. It cannot handle other contaminants.

Ultra-Violet Light

This technology entails the emission of UV light (invisible to the naked eye) into the air purifier chamber to attack the contaminants. There is no provision of a physical filter through which the polluted air has to pass through for filtration.

As the UV light is not released into the room, it is safe for humans. The primary responsibility of UV Light technology is to eliminate bacteria and viruses to make the environment free of particles that cause illnesses.


  • UV lights have a long life and do not require frequent replacement. They kill the germs and create a sterile environment inside the room.


  • As this technology can kill germs and bacteria, they are best used as additional features along with other filtration technologies. This technology is not much useful on a stand-alone basis.

Though we have discussed the four prominent technologies involved in air purification, there are a couple of other minor technologies in use.


They are useful for eliminating large particles like pet hair to make it easy for the subsequent filtration stages. Some of the pre-filters exhibit electrostatic properties and also use activated carbon to remove odours and smoke. These filters require frequent replacement.

Heat Filtration

This technology works by passing the air over an inner ceramic plate heated up to 400 degrees Centigrade to eliminate bacteria, viruses, mould, and dust mites. This technique is not much effective against VOCs, smoke, and non-organic contaminants.

Generally, an air purifier comes with a combination of more than one technologies discussed above.

The Classic Version is the traditional appliance that does not provide intelligent feedback on the type of impurities they remove.

However, they work well, as is evident from the dust that collects on the filters over a period. Some of them come with digital controls and air quality sensors to aid in the purification process.

The Smart-Enabled Version of air purifiers is compatible with a dedicated mobile app that provides valuable data that help to determine the appliance’s efficiency.

They also reveal the exact nature of pollutants removed from the room and track the air quality level in real-time. Naturally, these air purifiers are comparatively expensive.

Understand the technical terms

We have discussed the different technologies involved in air purification. Let us now understand some commonly used technical jargon concerning air purifiers. You will find these words thrown in almost every specifications list.

ACH – Air Changes Per Hour

ACH is a confusing term not much understood by consumers globally. However, it has tremendous significance because it shows the efficiency of your air purifier.

Generally, you find ACH ratings mentioned as 4x, 5x, etc. The 4x rating signifies that the air purifier removes and recycles the dirty air in the room with clean air four times in an hour. Therefore, the higher the number, the better should be the performance.

This rating should be seen in combination with the area of the room where you place the appliance. It reflects the maximum square footage the purifier can handle. We shall look at this aspect in detail when we discuss the room size and the appropriate size of the air purifier.

CADR – Clean Air Delivery Rate

CADR helps consumers to know how efficiently the appliance can clean the air in a room of a particular size. It is useful for comparing the effectiveness of the device. Therefore, it is significant when you compare two appliances before deciding on the appropriate choice.

The CADR need not be displayed on every air purifier. It helps you to make an honest assessment of the air purifier’s capability to handle a room of a particular size.

The CADR rating evaluates three types of air pollution, dust, tobacco smoke, and pollen.

Usually, the CADR is displayed as a set of three numbers to include every kind of pollutant, respectively. Thus, if an air purifier has a CADR of 200/250/225, it entails that the numbers refer to dust, tobacco smoke, and pollen, respectively.

The higher the CADR number, the more efficient is the air purifier at eliminating the specific contaminant.


Impurities are of various sizes. PM2.5 refers to those particulate matter having diameter less than 2.5 micrometres. Roughly translated, it amounts to 3% of the thickness of a human hair.

Particles of this size are not visible to the naked eye. But, they are present in the atmosphere. They can cause dangerous harm to the lungs and other organs of our body should we inhale them on a regular basis.


Just as PM2.5 refers to particulate matter having a diameter of 2.5 micrometres or less, PM10 refers to similar matter having diameter 10 micrometres or less. Comparatively, they are larger sized particles.

They can also cause great harm when we inhale them. Let us now discuss how to choose the ideal air purifier size for your room.

Ideal Air Purifier Size for the room

An air purifier is not a one-size-fits-all kind of an appliance. Many people make the mistake of going by the brand name and type without considering the size of their rooms.

The air purifier works best when it can handle the size of the room you place it in.

It is no use spending thousands of rupees on an incompatible air purifier. Therefore, the first thing you should do before purchasing the appliance is to check the square footage rating of the air purifier and compare it with your room size.

This calculation should help you determine the ideal air purifier for your room.

  1. For a single room, multiple the length and width of the room in square feet to get the total square footage.
  2. For multiple rooms, calculate the area of each room and add them.

Thus, you get an idea of the square footage rating your air purifier should have.

Placement in the room is crucial.

Just as there is a specific placement for an air conditioner, the air purifier should have an ideal placement in your room to deliver maximum efficiency. These following points should prove useful to decide where to place your appliance.

Air purifiers using a HEPA filter and Activated Carbon filters

The design of these filters is such that they use a fan to suck the impure air and push pure air back into the room. Hence, you should place these air purifiers in areas where there are no obstructions.

Placing this air purifier under a table or against a wall will hinder the airflow and affect the overall performance.

The ideal location should be about two to three feet from the walls or furniture to give the air purifier sufficient air space to work at its optimal best.

Air purifiers using Ionic filtration technology

These appliances do not use fans but release ions in a 360-degree angle. Therefore, the ideal placement for these machines is at the centre of the room. Placing it at the corners will end up restricting their efficiency.

Additional Features Present in Air Purifiers

When purchasing an air purifier, you must look for the following features, depending on the type of product you choose.

Some of these features come free with the appliance, whereas some might be optional. However, they could prove their worth. Therefore, you should not mind spending a few bucks more if the feature is a useful one.


These attachments are useful because they filter out the larger pollutants like hair and dirt. Thus, they help in extending the internal filter’s lifespan considerably. Usually, these pre-filters are washable.

Digital Controls

It is a convenience feature that makes it easy to fix the settings when compared to a push-button or rotary dial controlling option.

Adjustable Fan Speeds

Generally, air purifiers have between two to five adjustable fan speed settings. Some of them come with a turbo speed to cater to specific requirements.

Programmable Timers

These timers are energy-saving features that shut off the appliance after a pre-determined time interval. It helps prevent the device from running continuously even when you are not at home.

Filter Replacement Indicators

Replacing the filters when they become clogged and unusable is essential to ensure the machine’s efficiency. These replacement indicators alert you when it is time to replace the filters.

Carrying Handle

This attachment helps you to transport the air purifier from one room to the other comfortably.


Casters are wheels that allow easy transportation of the machine from one room to another. Generally, the massive machines have them.

Anti-microbial treatment

The internal filters get an anti-microbial coating to prevent the spread of bacteria and microorganisms. It enhances the filter’s lifespan while preventing the reintroduction of these germs back into the year.

Air Quality Sensors

Some of the air purifiers come with air quality sensors to monitor specific contaminants and adjust the air-purifying settings accordingly.

Plasma Wave Technology

This technology is comparatively safer than air ionization because it does not emit negative ions or release ozone. Instead, it used water vapour to achieve a similar effect.

Photocatalytic Oxidation

This process works with UV light for oxidizing chemicals and destroying VOCs bacteria, fungi, and moulds.

Night Light

The top-end air purifiers come with an in-built night lamp to indicate its presence in the dark. Thus, it becomes easy to locate the appliance in your room at night.

Remote Control

You can control the settings of your air purifier from a distance using the remote controlling option.

Mobile app

The smart-enabled air purifiers feature mobile app compatibility to operate the device, monitor data, and diagnose problematic issues, etc.

Additional Points to consider when purchasing an air purifier     

Your air purifier is a useful appliance. Hence, it becomes imperative to take care of the machine. These devices work better when you maintain them properly.

Depending on the type of air purifier you purchase, you incur maintenance costs. Therefore, it is better to have a clear idea of the same before buying the machine.

Filter Replacement

Air purifiers using HEPA and activated carbon filters require frequent filter replacement, depending on the quality of the input air. It is because the contaminants get trapped inside these filters and clog them, rendering them unfit for use.

It is advisable to check out with the manufacturer before purchasing the air purifier to know the frequency of filter replacement. These filters are also expensive. Hence, you should factor in the replacement cost, as well.

If you purchase the ionic air purifiers or the UV air purifiers, there is no need for replacing filters because they do not have any. Some of the ionic air purifiers come equipped with electrostatic collection filters for collecting the harmful pollutants from the air. These filters are washable and reusable.

Noise Levels

The air purifiers that use HEPA filters and activated carbon filters come paired with a fan system to suck the air inside the machine. These fans rotate at varying speeds depending on the settings you choose.

As you increase the speed, these fans can make noise. Some of the air purifiers come with a two-speed setting (high and low), whereas some come with five-speed settings.

The fans require overhauling at regular intervals to prevent them from making noise.

Besides, the blades can accumulate dust. They need frequent cleaning to work efficiently. It is somewhat similar to your ceiling fans.

The ionic air purifiers do not have any fans. Therefore, there is no question of any maintenance costs in this regard.

Energy Consumption

Air purifiers work on electricity. Hence, one should be aware of the energy consumption of your device to determine its efficiency.

BEE does not assign star ratings to air purifiers. Therefore, no one can know the energy efficiency of the appliance before purchasing it.

However, you can go for reputed brands to get guaranteed products.

Manufacturer Reputation

There are a variety of air purifiers available on the market. It can be challenging to select the ideal brand because of the lack of accurate data to compare efficiency.

Therefore, it is advisable to go with the manufacturer’s reputation.

Some of the top Air Purifier brands available on the Indian market are Philips, Honeywell, Crompton, Glen, Godrej, LG, HUL Pureit, Panasonic, Prestige, Sharp, and Whirlpool, etc.

Check out the warranties

Generally, air purifiers last long. However, no one can rule out problems from occurring with these machines. Hence, each air purifier comes with its manufacturer’s warranty.

You should check up the items that are covered under warranty. Usually, these warranties do not cover filter replacements.

Things we can do to Control Air Pollution at our Home

Most of the power generated in India is via Thermal Plants where they burn coal which is a major source for PM 2.5 and many other pollutants.

You can replace your Traditional Home Lights with LED lights that consume a lot less power, and you can also save some money.

If you are living in an Individual house, Do plant some trees. Also, If you Apartments have a balcony, Do plant some trees. These are the tiny things that we can do to control the Air pollution.

You might think It’s not significant. But, If Lakhs of us start planting trees at our home, then it can be a positive change.

Frequently Asked Questions

1. What is the frequency of filter replacements in an air purifier?

It depends on the quality of the indoor and outdoor air. Normally, you need to replace the filters annually. However, if the air quality is poor like it is in cities like Delhi or Dhanbad, the frequency of replacing the filters could be shorter.

Nowadays, air purifiers come with filter change alarms to indicate that it is time to change filters.

2. Which air purifier is the best in terms of performance?

One should always go for an air purifier that has a minimum of 3-stage purification. This should comprise of the pre-filter, activated carbon filters, and the HEPA filters. Some of the modern-day air purifiers have UV filtration methods as well.

3. How do you reduce the noise created by the air purifiers?

”The noise is due to the speed of the fans. You can reduce the noise by reducing the speed of the fans. The present-day air purifiers have built-in sensors that determine the level of impurities and adjust the fan speed accordingly. They also take care to reduce the speed considerably at night thereby providing a higher degree of comfort.

4. How effective is the HEPA filter?

The HEPA filter can remove 99.97% of PM2.5 impurities. That is an astounding performance by any standards.

5. What is the major drawback of having air purifiers?

The biggest drawback is that you need to change the air purifiers at regular intervals. It is better to enter into an AMC with the manufacturer. Alternatively, buy products that have a filter change alarm to notify you in case the filters need a replacement.

6. How long should an air purifier run during the day?

It depends on the level of air pollution in your area. It is better to let the machine run throughout the day to get the best results.

Initially, you can set the device at the highest settings. If your machine has automatic settings, it is an ideal one.

Once you notice a marked difference in the purity levels, you can reduce the settings to a lower level to save energy.

7. How much space do air purifiers cover?

It depends on the machine’s configurations. Some air purifiers can handle large rooms, whereas some are suited for purifying the air in small areas. The maximum square footage rating in the specifications indicates the area the machine can cover.

8. Does my kitchen need a separate air purifier?

Generally, one cleaner can handle all the rooms because the air purifiers come with multiple technologies. However, if you want a specific air purifier for the kitchen, you can opt for the machine that works with activated carbon filters.

9. Is it a challenge to change the air purifier’s filters?

No, the process is a straightforward one. The product manual can prove handy under such circumstances. Generally, they feature a pull-out filter on the back or the sides of the machine. You do not need any special engineering skills to replace the filters.

10. Should you keep the windows open or closed when using air purifiers?

If the room is sealed completely, the air purifiers demonstrate the best performance. Hence, it is better to keep the windows closed.

The air purifier removes contaminants from the air to circulate pure air inside the room. Keeping the windows open can affect the quality of air inside the room. Besides, the air purifier has to work harder if the windows are left open.

11. Can I check the quality of air as I do with water?

Air testing kits are available on the market. You can purchase them and check the air quality if necessary. However, it will not be required. The amount of debris that settles on your fan blades should encourage you to purchase an air purifier.

12. Are BEE star ratings available for air purifiers in India?

Unfortunately, BEE star ratings are not available for air purifiers in India. All other electrical and electronic equipment like air conditioners, refrigerators, etc. come with BEE star ratings. Maybe in the future, they might come with star ratings.

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